fix(api): surface schema validation failures as ApiError instead of ZodError

schema.parse() in apiRequestToRegion could throw a raw ZodError on
unexpected API response shapes, which the central error handler would
display as an 'Unexpected error' stack trace. Use safeParse() instead
and convert failures to ApiError so they surface as clean user-facing
error messages regardless of which command triggered the request.

Author: BYK

src/lib/api-client.ts

@@ -305,9 +305,23 @@ export async function apiRequestToRegion<T>(
   }
 
   const data = await response.json();
-  const validated = schema ? schema.parse(data) : (data as T);
 
-  return { data: validated, headers: response.headers };
+  if (schema) {
+    const result = schema.safeParse(data);
+    if (!result.success) {
+      // Treat schema validation failures as API errors so they surface cleanly
+      // through the central error handler rather than showing a raw ZodError
+      // stack trace. This guards against unexpected API response format changes.
+      throw new ApiError(
+        `Unexpected response format from ${endpoint}`,
+        response.status,
+        result.error.message
+      );
+    }
+    return { data: result.data, headers: response.headers };
+  }
+
+  return { data: data as T, headers: response.headers };
 }
 
 /**